New Stagger Stator PMM Design. Review wanted before construction.

[nwman]

Here is a simple graphic of how I would like to build the first crude loop. I'm concerned with how great the arc of the magnet rails would be and with the fact that the magnet can't wobble. However, I hope once I get the linear prototype done I can set to see if I can run it in a straight line or not. The rails in the pictures are cut peaces of another bike rim with the magnets taped to the outer edge of the rim segment. This will either work really slick or not at all.

Tim

[d3adp00l]

looks good for a start.

[nwman]

I just got the ring magnets in and WOW! Those things are strong. As I was cutting into the box my knife was being pulled in. That was a weird feeling. I should have time tomorrow to test it out using the ceramic disc rails. There is a good chance it wont work because Tom's rails had one made of Neos which are multiple times stronger. Something else that was funny is the three ring magnets had spacers between them. The spacers were MS word 6.0 floppy disks. They must not like word to put them that close to those magnets! 

Tim

d3, do you think the bike rim is good enough to start with or do you think its too small or might have other problems? I could fairly easily add arm extenders to the rim to make the diameter larger.

[d3adp00l]

If its a childs 10" rim it might be a problem, but if its a full size carbon fiber 10 speed as the pic shows the radi should be fine. For ease of construction for the first one, I would use two pieces of plywood with the radius cut to match the profile of the wheel. I trying to draw it in paint however my paint skill is lacking, take the two pieces of ply mounted to a base piece of ply. use a thin (1/8" melamine board) or even poster board to form the curvature to mount the rails. Total cost should be under 50 bucks. If you have a jigsaw, skillsaw and screwgun.

[nwman]

I was kind of thinking the same thing. I do construction on the side so I have all the tools. So if I understand right your saying to tape the magnets for the rails to a strip of melamine board and then attach that to the curve in the plywood? This is a simple illustration below. Is this what you where thinking? The rims I have are full size. They have a 13" radius.

Tim